package com.yingpai.fitness.dvp_2_0.main.widget;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.support.v7.widget.AppCompatEditText;
import android.text.Editable;
import android.text.TextWatcher;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;


/**
 * =================================================
 * 作者: GuoBin
 * 邮箱: remebermelula@aliyun.com
 * 时间: 2017-11-20
 * 类名:   ClearableEditText.java
 * 版本: V 1.0
 * 描述:带有清楚内容的EditText 继承AppCompatEditText
 * ===============================================
 */


public class ClearableEditText extends AppCompatEditText implements View.OnTouchListener, View.OnFocusChangeListener, TextWatcher {


    private OnFocusChangeListener mOnFocusChangeListener;
    private OnTouchListener mOnTouchListener;
    private Drawable getClearIcon;

    public ClearableEditText(final Context context) {
        super(context);
        init(context);
    }

    public ClearableEditText(final Context context, final AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public ClearableEditText(final Context context, final AttributeSet attrs, final int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    @Override
    public void setOnFocusChangeListener(final OnFocusChangeListener onFocusChangeListener) {
        mOnFocusChangeListener = onFocusChangeListener;
    }

    @Override
    public void setOnTouchListener(final OnTouchListener onTouchListener) {
        mOnTouchListener = onTouchListener;
    }

    private void init(final Context context) {

        if (getCompoundDrawables()[2] == null) {
            new Throwable("drawable is null inClearableEditText");
        }
        getClearIcon = DrawableCompat.wrap(getCompoundDrawables()[2]); //Wrap the drawable so that it can be tinted pre Lollipop
        DrawableCompat.setTint(getClearIcon, getCurrentHintTextColor());

        getClearIcon.setBounds(0, 0, getClearIcon.getIntrinsicWidth(), getClearIcon.getIntrinsicHeight());
        setClearIconVisible(false);
        super.setOnTouchListener(this);
        super.setOnFocusChangeListener(this);
        addTextChangedListener(this);
    }


    @Override
    public void onFocusChange(final View view, final boolean hasFocus) {
        if (hasFocus) {
            setClearIconVisible(getText().length() > 0);
        } else {
            setClearIconVisible(false);
        }
        if (mOnFocusChangeListener != null) {
            mOnFocusChangeListener.onFocusChange(view, hasFocus);
        }
    }

    /**
     * fix   ouTouch method   add
     *
     * @param view
     * @param motionEvent
     * @return
     */
    @Override
    public boolean onTouch(final View view, final MotionEvent motionEvent) {
        final int x = (int) motionEvent.getX();
        if (getClearIcon.isVisible()) {
            if (motionEvent.getAction() == MotionEvent.ACTION_UP && x > getWidth() - getPaddingRight() - getClearIcon.getIntrinsicWidth()) {
                setError(null);
                setText("");
            }

        }
        return mOnTouchListener != null && mOnTouchListener.onTouch(view, motionEvent);
    }

    @Override
    public final void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
        if (isFocused()) {
            setClearIconVisible(s.length() > 0);
        }
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    @Override
    public void afterTextChanged(Editable s) {
    }


    private void setClearIconVisible(final boolean visible) {
        getClearIcon.setVisible(visible, false);
        final Drawable[] compoundDrawables = getCompoundDrawables();
        setCompoundDrawables(
                compoundDrawables[0],
                compoundDrawables[1],
                visible ? getClearIcon : null,
                compoundDrawables[3]);

    }

    /**
     * 密文/明文的切换
     *
     * @param show
     */
    public void showPwd(boolean show) {
        if (show) {
            setTransformationMethod(HideReturnsTransformationMethod.getInstance());
        } else {
            setTransformationMethod(PasswordTransformationMethod.getInstance());
        }
    }

}